An experimental launch of a local currency — involving four pubs — saw all 10,000 pound notes snapped up within five days of coming into circulation.
Licensees in Lewes, East Sussex, reported few Lewes pounds available this week as the notes were snapped up by townsfolk and visitors as collectors' items.
An introductory offer of two free Lewes pounds for each £20 sterling note exchanged also led to a run on the new currency. As much as £30 for one Lewes pound was offered on eBay earlier this week.
The scheme, launched by Transition Town Lewes, is backed by 70 retail outlets, including four pubs, which have officially registered.
Licensee Declan Rowell, of the Elephant & Castle, said the new currency had proved very popular. "We got on board right from the start, but relatively few people are paying for their beer with Lewes pounds. Most ask for them in their change and it's clear they're viewed as a collector's item by many people," said Rowell.
"The Lewes pounds have proved so popular that they've all but disappeared," he added.